Door handle lock



May 4, 1954 E. N. JAcoBl y 2,677,261

DooR HANDLE Loox Filed Jan. 16, 1948 i' 2 sheets-sheet 1 7 Edw F I ambiMay 4 1954 E. N. JAcoBl 2,677,261

nooR HANDLE Loox f Filed Jan. le, 1948 2 sheets-sneu 2 I Z3 K PatentedMay 4, 1954 DOOR HANDLE LOCK Edward N. Jacobi, Milwaukee, Wis., assignorto Briggs & Stratton Corporation, Milwaukee, Wis., a corporation ofDelaware Application January 16, 1948, Serial No. 2,750

4 Claims.

This invention relates to locks and refers more particularly to a lockdevice for locking a pivoted door handle, as for instance the handle ofa refrigerator door, against actuation.

It is frequently desirable to provide locks for the doors ofrefrigerators and cold storage cabinets, especially where they arelocated in restaurants and hotels. The doors of such refrigerators andcold storage cabinets are commonly equipped with a latch mechanism ofthe type actuated by a handle pivoted at one end and free at its otherend to swing outwardly away from the door, it being necessary only topull the handle toward oneself in order to retract the latch and openthe door.

A common padlock cannot be used on a door of this type since even if itwere possible to install a suitable hasp, its presence would mar theappearance of the door.

it is, therefore, an object of this invention to provide a simple andcompact lock which will secure a door of the type described againstunauthorized opening and which will harmonize with the lines of the doorhandle so as to avoid creating an unpleasing appearance.

Another object of this invention resides in the provision of arefrigerator door lock of the character described which is readilyremovable from the door handle at times when it is not desired to havethe lock in place.

Another object of this invention resides in the provision of a lock ofthe character described which will require very little modication of thehandle structure of the cabinet or refrigerator door to accommodate thelock so that the appearance of the door will not be marred if it is notdesired to install the lock thereon.

Still another object of this invention resides in the provision of alock of the character described which may be constructed around a simpleand inexpensive type of cylinder lock mechanism.

With the above and other objects in View, which will appear as thedescription proceeds, this invention resides in the novel construction,combination and arrangement of parts substantially hereinafter describedand more particularly defined by the appended claims, it being underustood that such changes in the precise e1nbodiment of thehereindisclosed invention may be made as come within the scope of theclaims.

rThe accompanying drawings illustrate two complete examples of thephysical embodiment of the invention constructed according to the bestmodes so far devised for the practical applica tion of the principlesthereof, and in which:

Figure 1 is a side View of a portion of a refrigerator having a handleof the type to which this lock is particularly applicable, with the lockof this invention in place thereon;

Figure 2 is a perspective view of the lock device per se;

Figure 3 is a longitudinal sectional View of the lock of this inventionillustrating the way in which it secures the door handle againstactuation;

Figure 4 is a side View of a modied embodiment o1 this inventioninstalled on a refrigerator door, portions thereof being broken away andshown in section; and

Figure 5 is a View similar to Figure 4 but showing the manner ofremoving the lock shown therein to release the door handle foractuation.

Referring now particularly to the accompanying drawings in which likenumerals designate like parts, the numeral 5 designates the handle of arefrigerator door which, as is customary, is pivoted at its upper endwithin an escutcheon plate 5 and upon being pulled actuates the latchmechanism (not shown) to release the door for opening. rIhe lower end ofthe handle has an extension l which lies at against the lower endportion 8 of the escutcheon plate when the handle is in its normalposition and when the door is fully closed. It is secured in thisposition to lock the door, when desired, by the lock device of thisinvention designated generally by the numeral 9.

The lock device 9 comprises a barrel-like body Iii containing a tumblertype lock mechanism I I. This lock mechanism consists of the usual keycontrolled cylinder I2 rotatable Within a cylindrical casing I3 uponinsertion of a proper key Ill. Rotation of the cylinder is limited toone hundred eighty degrees by suitable stop abutments. The casing I3 issecured in position within the body by a pin I5.

Projecting rearwardly from the rear end of the barrel-like lock body isa round stem I6 having an eccentric bore Il extending longitudinallytherethrough to receive a shaft I8. The shaft Il! is fixed to the rearend of the cylinder as at I9, and at its outer end has a hook 2i!adapted to be swung from a locked position shown in full lines in Figure3 to an unlocked position indicated in dotted lines upon rotation of thecylinder through the permitted one hundred eighty degrees (180).

As will be readily apparent from Figure 3, when the lock device is inplace it stem I6 projects through aligned holes 2| and 22 in the handleextension l and the escutcheon plate respectively, the length of thestem being such that the rear end of the body l bears against the outerface of the handle 1 when the hook 29 engages behind the escutcheonplate. In this way the lock device secures the handle againstunauthorized actuation. Rotation of the cylinder to swing the hook 2B toits unlocked posiion disposes the hook 2l) within the diameter of thestem I6 to permit withdrawal oi the stem from the holes 2| and 22.

In the modied embodiment of the invention shown in Figures 4 and 5, thestem 23 which projects from the rear of the lock body is semicircular incross section and has the locking hook 24 formed directly thereon. Thus,in order to permit insertion and withdrawal or this stem it must betilted as shown in Figure 5 and in its locked position must be securedagainst such tilting.

To this end a longitudinally movable member is provided which, like thestem 23, is semi-circular in cross section and complements the stem 23to ll the round holes 2i and 22. This longitudinally or axially movablemember 25 is fixed to the inner end of the casing 2e which, in thisinstance, is closed and cooperates with the stem to preclude rotation othe casing relative to the lock body. Thus, the longitudinally movablemember 25 partakes of any motion of the lock casing 26.

The casing 26 has the cylinder 27|' rotatably mounted therein to bereleased for rotation upon insertion of a proper key 28 which acts uponthe tumblers in the customary manner. Upon rotation of the cylinder 2 apin 29 projecting radially therefrom and passing through acircumferential slot 30 in the wall of the casing is moved along thetransverse leg 3l of an L- shaped slot or groove in the wall of the boreof the lock body. Upon alignment of the pin 29 with the longitudinal leg32 of this L-shaped slot or groove, the cylinder 21 and its casing 26may be axially retracted to the position shown in Figure 5. Suchretraction of the cylinder and its casing withdraws the member 25sufficiently to permit the stem to be tilted for removal from thealigned holes 2l and 22.

From the foregoing description taken in connection with the accompanyingdrawings, it will be readily apparent that the refrigerator door tionsecurely locks the door of the refrigerator l against unauthorizedopening.

What I claim as my invention is:

l. A lock of the type described, for locking together two objects havingaligning holes therethrough, comprising: an elongated lock body having acylindrical bore opening to one end thereof, and a reduced stemprojecting from its opposite end longitudinally of the body; a laterallyprojecting hook on the outer extremity of said stem adapted to engageone of said objects at the far end of said holes when passed through theholes so that said objects are substantially clamped between the hookand the end of the body from which the stern projects, and the bodycompletely covers the entrance to said holes; key controlled lockmechanism in said body including a sleeve slidably fitting the bore inthe body and a cylinder rotatable in said sleeve; a longitudinallymovable member xed to the sleeve and projecting through a hole in thebody to have its outer end portion in juxtaposition to said stem andtogether with the stem substantially lling the hole when the lock is inplace upon said objects to block disengaging motion of the hook from theobject at the far end of the hole; and cooperating guide means on thelock cylinder, the sleeve and the body constraining the cylinder torotary motion between locked and unlocked positions relative to thesleeve and guiding the sleeve for axial motion relative to the body inthe unlocked position of the cylinder, to effect retraction of saidlongitudinally movable member to a position at which disengaging motionof the hook from behind the object at the end of the hole may beeffected.

2. Means for locking together two members having axially alignedrelatively small holes therethrough, comprising: a lock body; amemslidable axially in said body; a key controlled der for locking saidmember against axial ing motion the body; coo` eratino comple- `y latchelements having a combined cross al sise to fit the hole in said piercedobsubstantially smaller than the cross -1 fton between I one oi saidlatch ele Ls and the "y disposing said latch element lengththe directionof sliding motion of said member; a connection between one end ther latoelement and said slidable mem- .i holding said other latch elementlengthwise of the direction of sliding motion o said slidabie injuxtapositicn to the iirst designated latch element so that said twocompleeach men* latch elements cooperate with ci against rotationrelative to the loc Ling motion of said member outwardly of the from thesaid pierced objects retractsaid other latch element to a position atwhich the nrst designated latch clement is tiltalele laterally in saidholes; and a hook on the outer extremity of the nrst designated latchelement held engaged over the shoulder at the of the hole opposite thelock body by said second designated latch element in the projectedposition thereof.

3. A lock of the type described, for locking together two objects havingaligning holes therethrough, comprising: a key controlled cylinder lockincluding a lock body and a cylinder lock mechanism rotatable in andslidably with respect to the lock body by means of a key; a stem havingone end fastened to the lock body; a hook projecting from the other endof the stem to engage behind one of the objects, adje-cent to the holetherein, and thus hold the lo .z body in a position covering theentrance to the holes; a longitudinally movable member in juxtapositionto said stem and having a thickness substantially to nll said holes withthe stem; and a connection between one end of said longitudinallymovable member and the cylinder lock mechanism ccnstraining thelongitudinally movable member to endwise sliding movement with thecylinder lock mechanism but permitting the cylinder' lock mechanism torotate relative to the longitudinally movable member so that uponoutward sliding motion of the cylinder lockl mechanism with respect tothe lock body in the unlocked position of rotation of the cylinder lockmechanism the longitudinally movable member is moved to a retractedposition at which the hooi:

5 on the stem may be withdrawn from behind said one object.

4. A look of the type described for locking together two objects havingaligning holes therethrough, comprising: a key controlled cylinder loci:including a look body member and a cylinder member rotatable in saidlook body member by its key between locked and unlocked positions andslide-ble axially in said lock body member in its unlocked position ofrotation, `said lock body member being engageable with the shoulder atthe front edge oi the hole in one of the objects to ycover the same; astern fastened at one end to the lock body member to project throughsaid holes when the lock body member is in position covering the frontedge thereof; a hook on the outer extremity of the stem projectinglaterally therefrom to engage the shoulder at the rear of the holes; alongitudinally movable element; a connection between one end of thelongitudinally movable element and the cylinder member constraining thelongitudinally movable element to endwise motion with the cylindermember but permitting relative rotation between the longitudinallymovable element and the cylinder member, and disposing thelongitudinally movable element alongside the stem to project into theholes in the objects when the lock body member is in position over thefront edge of the holes t0 block disengagement of the hook from theshoulder at the rear of the holes; and cooperating guide means on thelock body member and the cylinder member for controlling motion of thecylinder member in the lock body member including a circumferentialgroove on one of said members and a projection on the other of saidmembers entering the groove, and a longitudinal groove on said rstdesignated member communieating with the circumferential groove and withwhich the projection aligns in the unlocked position of rotation of thecylinder member to guide the cylinder member for axial sliding motion inthe lock body member, away from the front edges of the holes, suchsliding motion of the lcylinder member carrying the longitudinallymovable element to a retracted position with respect to the stern atwhich disengagement of the hook from the shoulder at the rear of theholes may be eii'ected.

References Cited in the file of this patent UNITED STATES PATENTS NumberName Date 1,132,696 Struppler Mar. 23, 1915 1,513,432 Shaw Oct. 28, 19242,055,688 Halinka Sept. 29, 1936 2,232,020 Bernhardt Feb. 18, 19412,373,783 Schlifer Apr. 17, 1945

